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[Bug tree-optimization/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
- From: "iains at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 17 Jun 2012 14:12:35 +0000
- Subject: [Bug tree-optimization/53708] [4.8 Regression] Many failures of the objc tests with -O3 -fnext-runtime and -m32
- Auto-submitted: auto-generated
- References: <bug-53708-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53708
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-06-17
Ever Confirmed|0 |1
--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> 2012-06-17 14:12:35 UTC ---
it is because (some, if not all) the ObjC Meta-data alignment is being changed
from 2 to 4. (presumably so that they become eligible for vector ops).
However, the size/organization of the meta-data are fixed by the runtime,
external to GCC - thus we cannot adjust in this manner.
I think (but have yet to check) that the ObjC FE explicitly sets the alignment
of the items. Presumably, the ME should honor that?
If not, some suggestion about how to enforce what is needed would be helpful.